JS Hero does not track. Neither cookies nor tools like Google Analytics are used. Entered solutions are stored locally, i.e. on the device of the respective user. Page views are logged occasionally for analysis purposes. Among other things, the partial IP address, date, time and the used browser of the call are stored. The logs are stored for 7 days.

The JS Hero Web App is hostet at Uberspace. The domain is registered through Host Europe.